Vehicle Speed Sensor Circuit Range/Performance Problem
This code indicates a problem with the vehicle speed sensor circuit performance.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The vehicle speed sensor measures how fast the vehicle is going. If it's not working properly, the computer gets bad info and can't control things like shifting or cruise control effectively.
What the computer is actually seeing
The engine control module (ECM) expects to see a voltage signal from the speed sensor that varies with vehicle speed, usually between 0.5V to 5V, depending on speed.
What a healthy reading looks like
Voltage output from the speed sensor should be approximately 0.5V to 5V as vehicle speed changes from 0 to 70 mph.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check the vehicle speed sensor connector for corrosion or loose fit; repair as necessary.
- 2Measure the voltage output from the vehicle speed sensor while driving; it should vary between 0.5V to 5V.
- 3Inspect wiring for shorts or breaks from the sensor to the ECM; repair any found issues.
- 4If the sensor is okay and wiring is intact, replace the vehicle speed sensor.
Common causes
- Faulty vehicle speed sensor
- Damaged wiring or connectors in the speed sensor circuit
- Corroded connections or poor ground
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally drivable but expect issues with shifting, cruise control, and the speedometer may not work.
Will the code come back after clearing it?
If the underlying issue isn't fixed, yes, it will likely return.
Why do I see this code with SPN 1563?
SPN 1563 relates to transmission output speed, so if speed input is faulty, it can cause both codes to show up.
Working a real vehicle right now?
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